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- Venus (planet) (31010 bytes)
29: ...ecular oxygen is thought to have combined with atoms in the crust (large amounts of oxygen, however, r...
50: ...19]], [[1999]]. These respective events repeat themselves every eight years pursuant to the planet's s... - Neptune (planet) (18545 bytes)
9: | [[Urbain Le Verrier]]<br> [[John Couch Adams]]<br> [[Johann Gottfried Galle|Johann Galle]]
130: | [[Deuterium|Hydrogen Deuteride]] - HD
142: ... −218 °C (55 K). However, the planet seems to have an internal source of heat. It is thought...
154: ...e Airy]], who asked Adams for a clarification; Adams began to draft a reply but never sent it.
156: ...846]], [[Urbain Le Verrier]], independently of Adams, produced his own calculations but also experienc... - Atom (12300 bytes)
38: Atoms are composed of 3 types of [[subatomic particle]]...
43: Atoms are the fundamental building blocks of [[chemistr...
45: ...ong as the number of protons does not change. Atoms with different numbers of neutrons (but the same ...
48: ... compounds. Molecules are made up of multiple atoms; For example, a molecule of water is a combinatio...
50: Because of their ubiquitous nature, atoms have been an important field of study for many ce... - Hydrogen (20221 bytes)
92: | [[Deuterium|<sup>2</sup>H]]
108: ...]] and in all organic compounds and living organisms. Hydrogen is able to react chemically with most o...
113: ...n space, hydrogen tends to exist as individual atoms, simply because there is no way for them to combi...
115: ...e amounts of energy through combining hydrogen atoms into [[helium]].)
130: ...and is also used in [[nuclear fusion]] reactions. Deuterium compounds have applications in [[chemistry]] and ... - Lithium (11359 bytes)
91: | 10.8 [[siemens (unit)|MS]]/m
134: ...ver a flame, this metal gives off a striking [[crimson]] [[color]] but when it burns strongly, the fla...
148: ... Lithium niobate is used extensively in the telecoms market, such as mobile phones and optical modulat...
150: ...ithium-7 produce [[tritium]]. Tritium fuses with deuterium in a [[Nuclear fusion| fusion]] reaction that is ...
161: ...h one or more other elements or compounds. It forms a minor part of almost all [[igneous]] rocks and ... - Technetium (32113 bytes)
95: | 6.7 MS/m
207: ...m in the environment and in plant and animal systems.{{inote|Schwochau, ''Technetium''}}
211: ...prevents corrosion is not well-understood, but seems to involve the reversible formation of a thin sur...
225: ...nce of technetium.{{inote | TECHNETIUM, JOHN T. ARMSTRONG, NATIONAL INSTITUTE OF STANDARDS & TECHNOLOG...
229: ... }} The sample had previously been bombarded by [[deuterium]] nuclei in the [[University of California, Berke... - Star (12279 bytes)
19: ...ars and the phenomena exhibited by the various forms/developmental stages of stars.
46: ... Sun is a G2, which is very near the middle in terms of quantities observed. Most stars fall into the ...
51: The masses of other stars can be given in terms of [[Solar mass|M<sub>Sun</sub>]].
56: ...ther traditional names (mostly from Arabic), [[Flamsteed designation]]s, or [[Bayer designation]]s. Th...
66: :4[[protium|<sup>1</sup>H]] → 2[[deuterium|<sup>2</sup>H]] + 2[[positron|e<sup>+</sup>]] + 2... - Spectrophotometry (4459 bytes)
25: ...n a near-IR/VIS/UV spectrophotometer, typically a deuterium gas discharge lamp) is guided through a monochrom...
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